Passing parameters to ros_gz_bridge from launch files

[Amronos]

Desired behavior

It would be nice to have a way to pass qos_overrides or other parameters to ros_gz_bridge with the launch files ros_gz_sim.launch.py, ros_gz_spawn_model.py, and ros_gz_bridge.launch.py, etc. which I don't think is currently possible.

Alternatives considered

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Implementation suggestion

There could be another argument added to the launch files, something like bridge_params which can later be substituted into the parameters of the ros_gz_bridge node.

I am willing to work on this, but first wanted to open an issue to discuss how this should be done.